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Measurement of Bitumen Coverage of Stones for Road Building, Based on Digital Image Analysis

The top layer of a road is made up of a mixture of stones and bitumen and the durability is dependent on how well the bitumen adheres to the stones. The standard way of determining the bitumen coverage in the industry is the so called rolling bottle method, where a number of stones cov- ered with bitumen are put in a rolling bottle and the bitu- men coverage is estimated after different times. Thi

Force Feedback for Assembly of Aircraft Structures

Variability in composite manufacture and the limitations in positional accuracy of common industrial robots have hampered automation of assembly tasks within aircraft manufacturing. One way to handle geometry variations and robot compliancy is to use force control. Force control technology utilizes a sensor mounted on the robot to feedback force data to the controller system so instead of being po

A 100MHz CMOS gm-C bandpass filter

has a center frequency of 100MHz and a passband of 10MHz. The filter architecture is insensitive to parasitic capacitances, which allows for the implementation of bandpass filters over a very large frequency range. Intrinsic parasitic Q-enhancement techniques have been used, thus, obviating the need for any additional Q-tuning circuitry. The presented filter has small implementation losses with ch

Cramér-Rao bounds for determination of permittivity and permeability in slabs

We compute the Cramér-Rao lower bounds for determination of isotropic permittivity and permeability in slabs using scattering data such as reflection and transmission coefficients. Assuming only the fundamental mode is propagating in the slab, the results are formally the same regardless if the slab is in free space, or inside a rectangular or coaxial waveguide. The bounds depend only on signal qu